Berlin was in the midst of a mini-heatwave, the temperature nudging past 30C every day we were there. It was perfect weather for a spot of nude sunbathing in the Tiergarten (not that I did that… ahem) but otherwise, much of our time was spent darting from one shady spot to another, to keep the fierce sun off our backs. Still, we crammed in plenty of sights while we were there.
We availed ourselves of the famous 9-Euro-Ticket. First made available in June for a three month period, this ticket gives unlimited access to all local transport across Germany. The ticket is subsidised by the German government and was meant to offset increasing transport costs for commuters, but seems to have been largely used by leisure travellers, with resultant overcrowding on tourist routes as Germans headed to the beach en masse. Even for us, staying in Berlin for just three days, it saved us money (a standard day ticket for just Berlin costs €8.80).